
(function changevisible(element){
    var children = element.parentNode.childNodes;

    for(var i= 0; i<children.length;i++){

        if(children[i].nodeName == "DIV"){

            var className = children[i].className;

            if(className == "show" ){

                //      element.className="fold";
                children[i].className="hidden";
            }
            else{
                //  	 element.className="expend";
                children[i].className="show";
            }
        }
    }
})();